Governor for power-shafts



(No Model.)

. W. H. MGFADDEN.

GUVERNOR FOR POWER SHAPTS.

574,209. Patented 1360.29, 1896.

ou .1. W J im Il. 1,. M l L w Atty, v

UNITED STATES PATENT OFFICE.

VVILLIAllI I'I. MGFADDEN, OF ALLEGI'IENY, PENNSY TANIA.

GOVERNOR FoR PowER-sHAFTs.

. VSICIL'JIE 'ICATION' forming part of Letters Patent 0. 574,209, dated December 29, i896.

Application i'iled March 23,1896. Serial No. 584,403.. (No model.)

To all whom it may concern,.-

Be it known that I, WILLIAM H. MCFAD- DEN, a citizen of the United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented or discovered a certain new and useful Improvement in Governorsfor Power-Shafts, of which improvement the following is a specification.

The invention described herein relates to certain improvements in brakes for controlling the rotation of power-shafts, dac. and has for its object. the automatic regulation of the forward or reversev speed of the shaftl A In general terms: the rinvention consists in the construction vand Vcombination substantially as hereinafter more fully described and claimed,...l

. the tension of the springs.

The power-shaft 1, to which islattached any suitable motor, (not shown,) isy mounted in suitable bearin gs 2,0n1y one of which is shown. On the bearing2 is formed or secured a flange 3, provided with a laterally-projecting rim 4,

" and o'n the power-shaft 1 is secured a similar disk 5, preferably having a liange 6.Which will overlap the rim 4. Such overlapping'g rim may, however, be omitted. Two or more shoes '7 are mbvably mounted on blocks 8, which are secured on the inner face of the 'disk 5. These blocks are arranged in slots 9, formed in the shoes, and are provided with heads Iwhich overlap the sides of the slots and there-v by hold the shoes in place. The perimeters of the shoes are curved to correspond to the .curvature ofthe inner surface of the rim 4,

so as to have a good firm bearing thereon.

v The shoes are normally held out of Contact with the rim 4 by means of springs 10, which opposite' pitches. The sleeve is held from aecid'ental rotation by an open-sided clip 13, so arranged that the normal pull of the springs will hold the sleeve in the clip. Then it is desired vto adjust the tension of the springs, thesleeve is pulled laterally out of the clip, when it can be turned.. .As soon as released the spring will pull back into the clip., v When using my improved brake or governor, the springs are adjusted to a tension which will be overcome by the centrifugal force of the shoes when the speed of rotation of the shaft exceeds a certain predetermined rate, and the slices will then be freed outwardly by the centrifugal force and bear against the stationary rim 4 Witha pressure proportioned to the excess of speed above. the predetermined rate.

I claim herein as my invention- A governor for power-shafts having in combination a bearing provided with a laterallyprojecting rim, a disk or plate secured t0 the power-shaft, shoes mounted on the disk or plate and adapted to be forced outwardly against the stationary rim by centrifugal acl tion, springs having their outer ends connected to the shoes, and their inner ends to threaded pins, an internally-threaded sleeve engaging said pins, and an open-sided clip for holding the sleeve as against rot-ation, sub-l stantially as set forth.

In testimony whereof Ihave hereunto set my hand.

WILLIAM 1I. MCFADDEN. lVituesscs:

DARWlN S. WoLCoTr, M. S. MURPHY.- 

